Alternatif Desain Gedung Perkuliahan di Semarang Menggunakan Pelat Baja Komposit Dengan Sistem Struktur Eccentrically Braced Frame (EBF)

Muazam, Muhammad Fikri Firdaus (2025) Alternatif Desain Gedung Perkuliahan di Semarang Menggunakan Pelat Baja Komposit Dengan Sistem Struktur Eccentrically Braced Frame (EBF). Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Indonesia merupakan negara yang terletak di wilayah Cincin Api Pasifik, menjadikannya sangat rentan terhadap aktivitas seismik seperti gempa bumi. Kondisi ini menuntut perencanaan struktur bangunan yang mampu menahan gaya lateral akibat gempa. Struktur baja dengan sistem Eccentrically Braced Frame (EBF) menawarkan solusi struktural yang unggul dibandingkan sistem konvensional seperti Moment Resisting Frame (MRF) dan Concentrically Braced Frame (CBF), terutama dalam hal daktilitas dan disipasi energi. Dalam tugas akhir ini, dilakukan perencanaan ulang Gedung Perkuliahan di Semarang yang sebelumnya menggunakan struktur beton bertulang, menjadi struktur baja dengan sistem EBF berkonfigurasi inverted V-braced, guna meningkatkan performa seismik serta efisiensi pondasi. Metodologi yang digunakan dalam perencanaan ini mencakup studi literatur, pengumpulan data eksisting, analisis gaya gempa dan pembebanan sesuai SNI, serta pemodelan dan analisis struktur menggunakan perangkat lunak ETABS. Evaluasi performa struktur dilakukan melalui analisis partisipasi massa, periode fundamental, gaya geser dasar seismik, simpangan antar lantai, dan pengaruh efek P-Δ. Selanjutnya dilakukan perencanaan elemen struktural utama seperti kolom, balok, link, dan bracing, serta struktur bawah berupa pondasi tiang pancang dan pilecap, berdasarkan standar nasional dan internasional yang berlaku.Hasil analisis menunjukkan bahwa struktur alternatif dengan sistem EBF memiliki partisipasi massa sebesar 100% pada arah X dan Y, serta periode getar fundamental yang berada dalam batas yang diizinkan. Gaya geser dasar seismik dan simpangan antar lantai juga memenuhi persyaratan sesuai SNI 1726:2019. Elemen struktur utama menggunakan profil king cross 800×400×19×32 untuk kolom KC1, profil king cross 600x300x12x19 untuk kolom KC2, dan profil king cross 500 x 300 x 12 x 19 untuk kolom KC3. WF 600×300×14×28 untuk balok utama B1, WF 500x300x12x16 untuk balok utama B2 serta WF. Hbeam 300x300x25x25, dan 300x300x16x16 untuk elemen bracing. WF 600x300x12x28 untuk elemen link dan balok diluar link. Struktur bawah dirancang menggunakan pondasi tiang pancang berdiameter 45 cm dengan kedalaman 16 m yang terhubung dengan pilecap berbentuk persegi berdimensi 2,700m × 2,700m dan 4,025m x 4,025m, dengan kontrol terhadap gaya geser satu arah, dua arah, dan penulangan sesuai SNI 2847:2019. Dengan demikian, sistem EBF terbukti mampu meningkatkan kinerja seismik, efisiensi pondasi, dan stabilitas bangunan bertingkat tinggi di wilayah rawan gempa.=========================================================================================================================
Indonesia is a country located on the Pacific Ring of Fire, making it highly vulnerable to seismic activities such as earthquakes. This condition demands the planning of building structures that are able to withstand lateral forces due to earthquakes. Steel structures with Eccentrically Braced Frame (EBF) system offer superior structural solutions compared to conventional systems such as Moment Resisting Frame (MRF) and Concentrically Braced Frame (CBF), especially in terms of ductility and energy dissipation. In this final project, the re-engineering of a lecture building in Semarang that previously used a reinforced concrete structure, to a steel structure with an inverted V-braced EBF system, is carried out to improve seismic performance and foundation efficiency. The methodology used in this plan includes a literature study, collection of existing data, analysis of earthquake forces and loading according to SNI, and modeling and analysis of structures using ETABS software. Structural performance evaluation is carried out through mass participation analysis, fundamental period, seismic base shear force, inter-storey deviation, and the influence of P-Δ effect. Furthermore, the planning of main structural elements such as columns, beams, links, and bracing, as well as the lower structure in the form of pile foundations and pilecaps, is based on applicable national and international standards.
The analysis results indicate that the alternative structure with an Eccentrically Braced Frame (EBF) system achieves 100% mass participation in both the X and Y directions, and its fundamental vibration period falls within the allowable limits. Seismic base shear forces and inter-story drift also satisfy the requirements of SNI 1726:2019. The main structural elements use King Cross 800×400×19×32 profiles for column KC1, King Cross KC 600x300x12x19 profiles for column KC2, and King Cross KC 500 x 300 x 12 x 19 profiles for column KC3. WF 600×300×14×28 for main beam B1, WF 500x300x12x16 for main beam B2 and WF. Hbeam 300x300x25x25, and 300x300x16x16 for bracing elements. WF 600x300x12x28 for link elements and beams outside the link. The substructure is designed using pile foundations with a diameter of 45 cm and a depth of 16 m. These piles are connected to square pile caps with dimensions of 2.700 m × 2.700 m and 4.025 m x 4.025 m. The foundation design includes checks for one-way shear, two-way shear, and reinforcement in accordance with SNI 2847:2019. Therefore, the EBF system has proven capable of enhancing seismic performance, foundation efficiency, and the stability of high-rise buildings in earthquake-prone regions.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	ETABS, Eccentrically Braced Frame (EBF), Inverted V-Braced, Performa Struktur, Gempa Bumi.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA645 Structural analysis (Engineering) T Technology > TA Engineering (General). Civil engineering (General) > TA658 Structural design T Technology > TA Engineering (General). Civil engineering (General) > TA660.C6 Columns T Technology > TA Engineering (General). Civil engineering (General) > TA660.F7 Structural frames.
Divisions:	Faculty of Vocational > Civil Infrastructure Engineering (D4)
Depositing User:	Muhammad Fikri Firdaus Muazam
Date Deposited:	04 Aug 2025 07:15
Last Modified:	04 Aug 2025 07:15
URI:	http://repository.its.ac.id/id/eprint/125864

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